Furnace.



PATENTE) JANjsl, 1905. L. S. BAKER.

- FURNAGE. APPILIQATION FILED s221230. 190s.

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UNITED STATES- Pa'tented January 31, 1905.

lLYMAN S. BAKER, OF CAMDEN, MICHIGAN.

.'FURNAGE.

SPECIFICATION 'forming partof Letters Patent No. 781,388, dated January 31, 1905.

' 'Applicationiled September 30, 1903. Serial No. 175|,11 '7.

To @ZZ whom t may concern:

Be it known that I, LYMAN S. BAKER, aicitizen of the United States, residing at Camden, county of Hillsdale, State of Michigan, have invented a certain new and useful Improvement in Furnaces; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and'use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to furnaces, and has for its object improvements in various details of construction of the furnace.

In the drawings, Figure 1 is a perspective Fig. 2 is a Vertical. cross-sectional view. Fig. 3 shows a damper or airregulating valve. Fig.` 4 is a vertical elevation longitudinal of the furnace, partly broken away. Fig. 5 is a perspectiveview showing a detail.

A indicates the base of the "furnace, within .which is contained the ash-pit B. Above this chamber B, above which are radiating-lines E y and a radiating-drum F.

G indicates a magazine having a removable lower terminalg and inclined upper portion g', closed by a door g2. The lower terminal gis made separate from the upper portion and is removable from the plate H, which closes the furnace above the combustion-chamber D and through which are the openings thatlead into the radiator-lines E.

A direct-draft pipe2 leads from .the combustion-chamber into the smoke-flue 3. .The

be actuated by a cord 7, that leads over sheaves 8 and 9 to the door 10, andthe opening of the ldoor actuates the dampers to close damper 6 and open thel damper 4 and produce a direct draft to the'smoke-flue 3 whenever the door 10 is opened. y The grate a; is pivoted at its center and is turned on its pivot byl a lever that projects intothe shaking-aperture 11. 5 Secondary air is admitted tothe combustion-chamber D through a plurality of small openings 12, that are spaced alongk ay curved plate 13, and the curved plate 13 is secured to the inside of the walls of the combustionchamber D, a plate being secured to each side. The curved plate and the walls of the combustion-chamber inclosel a distributionchamber 14, into which leads an inlet-pipe 15. The pipe 15 .leads into the air-distribution chamber 14 at a point intermediate the ends thereof. There are two air-inlet pipes 15, one at each side of the furnace, and each is closed at its outer end by valve 16. The inlets 12 admit a large volume of air in small Streams into thel combustion-chamber D immediately over the surface of the coal in the fire-pot C, furnishing the necessary secondary supply of oxygen for a perfect combustion.

What I claim is- In a furnace, in combination with a lire-pot and a combustion-chamber thereover, radiating-fines and a radiating-drum, a direct-draft pipe leading from the combustion-chamber and a smoke-flue leading from the radiatingdampers in both of said flues, and means con? nected with the door whereby they are actuated from the door, substantially as described.

In testimony whereof I sign this specification in thepresence of two witnesses.

-LYMAN S. BAKER. .Witnessesp f B. B. ALwARD, l F. L. SHANNON. 

